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My bike is powered by two 36v10ah LiFePo4 batteries in series. They give my bike an enormous range of about 70 miles at 12mph or 35 miles at 20mph. However, each battery weighs 15 pounds and they are expensive at $600 each.

My bike is powered by two 36v10ah LiFePo4 batteries in series. They give my bike an enormous range of about 70 miles at 12mph or 35 miles at 20mph. However, each battery weighs 15 pounds and they are expensive at $600 each.